Pipe-shellacking machine.



} No. 740,604. PATBNTED OCT. 6, 1903.

(Ir-0. STRUTZ.

PIPE SHELLAGKINGY MACHINE.

APPLICATION FILED JUNE 5, 1903.

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No. 740,604. PATENTED 001?. 6, 1903;

c. 0. STRUTZ.

PIPE SHELLAGKING MACHINE.

APPLICATION rum JUNE 5. 190a.

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UNITED STATES iatented October 6, 1903.

PATENT. OFFICE.

Pl'PE-SHELLACKING MACHINE.

SPECIFICATION forming part of Letters Iatent No. 740,604, dated October 6, 1903. Application filed June 5, 1903. Serial No. 160,253. (No model.)

To all whom it may concern:

Be it known that 1, CHARLES O. STRUTZ, a

citizen of the United States, residing at VVa-shington, in'the county of Franklin and State of Missouri, have invented a new and useful Pipe-Shellacking Machine, of which the following is a specification.

"This invention has for its principal object to provide a machine for applying shellac or similar material to pipes with a View of re- A still further object of the invention is to.

provide a device of this character in which provision is made for automatically feeding the pipes to the pipe supports or mandrels and, further, to provide for the automatic discharge of the pipes after the completion ofi I travel at the same rate of speed, it is prethe shellacking operation.

A still further object of the invention is. to provide a device of this character in which provision is made for governing the quantity of shellac applied to each pipe and, further, f

.a hopper or chute 18 is arranged at each side of the machine, the lower portion, of the hopper being extended out in a plane parallel with thatof the plates and so arranged that it supports the pipe in the planeof movement in which the 'pipes'or pipe-carrying devices serve as a means for actuating and timing the movement of the shellac-applying device;

With these and other objects in view the invention consists in the novel construction and arrangement of parts hereinafter described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that various changes in the form, proportions, size,

and minor details of the structure may be made without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawings, Figure 1 is asideelevation of a pipe-schellacking machine constructed in accordancewith the invention. Fig. 2 is a plan View of the same. Fig. 3 is a transverse sectional elevation of a portion of the machine, drawn to an'enlarged scale and illustrating principally the construction and arrangement of the pipe hopper or chute. Fig. 4 is a detail cross-section illustrating the method ofdriving the pipe-holders. Fig. 5 is a View, partly in section, illustrating a modification of the construction of the shellac-applying device.

Similar numerals of reference are employed to indicate corresponding parts throughout theseveral figures of the drawings.

The various operating parts of the mechanism are supported on a suitable frame 1, having bearings 2 for the reception of a pair of parallel shafts 3, carrying belt-wheels 4, upon which are guided two parallel belts 5. The belts are provided at equidistant intervals with bearing-blocks 6, adapted for the reception of transversely-disposed spindles 7, ex-

tending across the full width of the machine and having terminal mandrels 8 for the reception of the pipes to which the shellac is to be applied. One of the shafts is provided with a gear-Wheel 9, intermeshing with a pinion 10 on a'shaft 11, and this shaft also carries a beltwheel 12, driven from anysource of power. While the two belts 5 may be relied upon to ferred to insure uniformity by providing each shaft with a sprocket wheel 14, these being connected by a suitable link belt '15.

In order to supply the pipes to the machine,

of the mandrels, the longitudinal axis of the pipe being approximately in the horizontal plane of'the axes of the mandrels, or, if a wheel is used in place of the endless belts, in the circular plane of the mandrels. Extending through the lower portion of each hopper is a plunger 20, the head of which seats in a recess in the lower end of the chute,while the outer end of said plunger has a pin-and-slot connection with one end of a lever 21. The lever is pivoted on a stud 22, and that end opposite to the plunger is disposed in the path of movement of the mandrels or the ends of the several spindles, so that as the mandrel or spindle comes, into contact with this end of the lever the opposite end of said lever tained within the cup.

will receive inward movement and the plunger 20 will be actuated to force the pipe or pipeblank on to the mandrel.

The pipes to be supplied to the machine are fed through the hopper or chute 18, the lower end of which is turned to an approximately horizontal position in order that the lowermost pipe, or that pipe at the extreme end of the chute,will not be compelled to support all of the weight of the Whole column of pipes, and thus permit the more ready operation of the plunger. The parts are so timed as to permit a quick operation of the plunger each time one of the mandrels or spindles comes into contact With the shorter arm of lever 21, and the bored and partlyiinished pipe will be forced from the chute into position on the mandrel or the end of the spindle. To facilitate the introduction of the pipe, the spindle or mandrel is preferably slightly rounded or pointed, as shown in Fig. 3.

The pipes are fed successively to the man drels and are carried around in the direction of the arrow until the lower run of the belts is reached, at which time small friction-wheels 27, one of which is arranged on each spindle, comes into contact with a traveling belt 28, mounted on suitable rollers 29, and receiving motion through a suitable link belt or other connecting device from one of the main shafts or otherwise, so driven as to impart the necessary movement to the several spindles.

On opposite sides of the machine are shellac-cups 30, connected by a valved pipe 31 to a containing vessel or reservoir 32,by means of which a constant level of shellac may be main- The shellac-applyin g devices are in the form of brushes 33, mounted on arms 34, and each of said arms is pivoted at 35 to a standard 36. The upper end of each of the brush-carrying arms is connected by a link 37 to one arm of a bell-crank lever 38, carried by a standard 39, and the opposite arm of said bell-crank lever is disposed in the path of movement of the spindles, so that each spindle serves to actuate the brushcarrying arm and raise the brush into pipeengaging position. During this time the mandrel is being revolved and the pipe rotated in order to secure an even coating of shellac on each pipe. The surplus shellac carried by the brush is removed by a scraper 40, arranged at one side of the shellac-cup and having aplurality of blades adapted to successively engage with the brush and scrape off any surplus shellac. In order to prevent the abrupt return of the brush-carrying arm and thus avoid scattering of the shellac, each arm is provided with a small plunger 42,

adapted to a dash-pot or buffer 43, carried by,

bottom of such chute. On the starting of the operation the ends of the spindles or mandrels will successively come into contact with the shorter arm of lever 21 and will force the opposite end of said arm inward in such manner as to cause the feeding of a pipe or pipeblank from the bottom of the chute to one of the mandrels. As the movement continues the friction-wheels 27 on the successive spindles come into engagement with the friction driving-belt 28 and cause the mandrels and the'pipes carried thereby to revolve at any desired speed. The spindles act successively on the vertical arm of bell-crank lever 28, and each time the spindle passes said bell-crank lever the brush-carrying arm is raised and the shellac-brush moved from the cup to apply shellac to the pipes.

On the completion of the shellacking operation the continued movement of the carrier gradually brings the pipes into engagement with stationary cams l5, carried by the frame of the machine, the cams being so arranged and disposed as to gradually force the pipes from the mandrels or spindles, the pipes falling into a suitable basket or receptacle or being conveyed to a drying or finishing machine located at any desired point.

The character of the shellac-applyin g mechanism maybe altered in the manner shown in Fig. 5, wherein the shellac-cup is shown in the form of a shallow trough 30 and the brush 33 is circular in form and may be revolved either by contact with the pipes or by any desired auxiliary mechanism, the surplus shellac being removed from the brush by means of a scraper 40.

Having thus described the invention, what is claimed is 1. In a machine of the character described, a carrier, mandrels supported thereby, means for automatically feeding pipes to the mandrels, means for applying a coating to said pipes, and means for removing pipes from the mandrels.

2. In mechanism of the class described, endless carriers, mandrels supported thereby, a pipe-chute, and means operable by the successive mandrels for forcing pipes from the chute to a position on a preceding mandrel.

3. In mechanism of the class described, an endless carrier, mandrels supported thereby, a chute, and feeding devices forforcing articles from the chute to position on the mandrels, said forcing means being actuated by the successive mandrels on the carrier.

4:. In mechanism of the class described, an endless carrier,-mandrels supported thereby, a pipe-chute having a point of discharge at its lower end, a pipe-engaging plunger, and

a lever connected to the plunger and having one end disposed-in the path of movement of the mandrels.

5. In mechanism of the class described, an endless carrier, mandrels supported thereby, means for supplying the pipes to the mandrels, a shellac-applying brush,-and means for rotating the mandrels and the pipes While in contact with said brush.

6. In a pipe-shellacking machine, an endless carrier, a plurality of mandrels supported thereby, means for feeding pipes to the mandrels, a shellac-applying brush, a movable friction driving member, and friction-Wheels associated with the mandrels and engaging said friction driving member While the pipe is in contact With the shellac-applying device.

7 In a pipe-shellackin g machine,an endless carrier, mandrels supported thereby, a shellac-cup, and a shellac-brush movable to pipeengagingposition by the successive mandrels.

S. In a pipe-shellaeking machine,an endless carrier, niandrels supported thereby, a shellac-applying brush, a pivoted arm carrying said brush, a bell-crank lever having a linked connection with said arm, one end of said bell-crank lever being disposed in the path of, movement of the mandrels, means for remy own I have hereto affixed my signature in the presence of two'witnesses.

CHARLESO. STRUTZ.

Witnesses:

O. WARRENER, JNO. E. PARKER. 

